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A general order such as below can be given for different insulation materials' fire resistance:
| ***** |
MMMF (Mineral Fibre) |
| ***** |
IPN
|
| **** |
PIR |
| *** |
B2 PUR |
| ** |
B3 PUR |
| * |
Polystyrene |
No significant differentiation between PUR, PIR, Polystyrene and IPN. They all remain within B class in Euroclass tests .
The new Euroclass Reaction to Fire Tests do not fully assess panel fire performance and should not be taken in isolation.
| The only way to test for real performance against fire is to perform a realistic scale test on the composite panel in a setting which will simulate real fire – incorporating realistic joint details and fixings.
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